Question

Evaluate the expression 5a - 4x - 3y if a = -2, x = -10, y =5

Answer 1

Well, all you need to do is substitute for each of the variables as stated.
5(-2)-4(-10)-3(5)
-10--40-15
two negatives make a positive
-10+40-15
30-15
15 is the answer.

Answer 2

Okay, that's what I thought. I just had to make sure. Thanks a bunch. :)

Answer 3

No problem :)